TOA Impedance Meter, use to troubleshoot 25 & 70 volt paging speaker lines. Figure actual wattage draw on amplifier. Finding a short or an 8 ohm speaker in the line is a frustrating ordeal without this unit. A must have tool for commercial paging installation and service.

Measures impedance of speaker lines up to 100k ohms

Batteries: four (AA)

Zero adjustment for accuracy on all ranges

Easy to read meter calibrates directly in ohms

Includes carrying case, test leads and impedance to power reference chart